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Short black cable with 7.4 mm and 4.5 mm barrel connectors

DELL

DELL DC Power Dongle Cable 7.4mm to 4.5mm laptop adapter

SKU CH-3AV4-3BXMA

A 7.4 mm to 4.5 mm DC dongle that lets newer Dell laptops use older 7.4 mm power adapters

  • Converts 7.4 mm barrel to 4.5 mm for legacy Dell adapters
  • Works with XPS 12 13 15 and Precision M3800 models
  • Compatible with Inspiron 11 13 14 15 17 series laptops
  • Lightweight dongle designed for ultra-slim XPS systems
  • Multiple Dell part numbers including 57J49 and 331-9319

Dell DC Power Dongle Cable 7.4mm to 4.5mm

This Dell DC power dongle cable converts a 7.4 mm barrel connector to a 4.5 mm tip. It lets owners of compatible Dell laptops use an existing AC adapter with the larger plug. The adapter suits ultra-slim XPS systems and listed Inspiron models. It is a compact accessory for travel or desk use.

Original Dell DP/N 57J49 D5G6M 0D5G6M build

The dongle carries Dell part numbers 57J49, D5G6M, 0D5G6M, 450-18765 and 331-9319. Its moulded connectors fit securely into the power port and the charger tip. The short cable keeps the junction tidy without adding bulk. It is designed for the specified Dell series only and not for laptops requiring a different tip size.

Lightweight direct current adapter thermals

The passive dongle draws no power itself and adds negligible resistance to the charging circuit. It produces no audible noise and generates no measurable heat during normal operation. The unit simply passes DC current from the adapter to the laptop. Buyers needing a replacement AC brick or a different voltage will not find that here.

Highlights

  • Converts 7.4 mm barrel to 4.5 mm for legacy Dell adapters
  • Works with XPS 12 13 15 and Precision M3800 models
  • Compatible with Inspiron 11 13 14 15 17 series laptops
  • Lightweight dongle designed for ultra-slim XPS systems
  • Multiple Dell part numbers including 57J49 and 331-9319

Specifications

No published specifications for this item yet.

Questions about this item

What connector sizes does this 7.4 mm to 4.5 mm dongle adapt between?

It converts a Dell 7.4 mm barrel plug to a 4.5 mm barrel jack so older power bricks can charge newer ultra-slim systems.

Which Dell laptop families are listed as compatible with this adapter?

Compatible models include XPS 12, 13, 15, Inspiron 11, 13, 14, 15, 17, Precision M3800 and select 18, 1810, 1820 and 5930 units.

How is the dongle connected between the power brick and the laptop?

Plug the 7.4 mm end into the existing Dell AC adapter tip, then insert the 4.5 mm end into the laptop’s DC-in jack; the step often missed is seating the 7.4 mm side fully before powering on.

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